Simple.... DON'T do drugs - period !
gray hair has no melanin. melanin is waht cocaine and other synthetic drug metbolytes bond to. marijuana bonds to keratin. so if you are a moderate coke user you may be able to beat a hair test. if you smoke pot, you are screwed.
Hair Follicle drug testing is the most accurate, long term, and hard to beat, of all laboratory drug testing. As your hair grows, any chemical substances in your body also grow out with your hair. Other than shaving your head, there is no way to hide drugs in a hair follicle test.
If the hair is damaged so much that it starts to break, then it might affect the test... but damage on that level will also be easily identified in the test, and likely when collecting, and they can use hair from other parts of the body instead. The best way to beat a drug test, as always, is to avoid drugs.
No, not really as it can detect up to 90 days, maybe longer depending on how often you use, also hair growth.
The only way is not to smoke it. THC stays in the hair and fat cells of the body. Just don't use and you will pass any test.
if you beat someone "by a hair" it means that you beat them, but not by very much.
they swab the mouth no hair test.
its hair FOLLICLE test and you need hair razor.
yes they do not actually take the root it is not pulled it is cut, a hair test is a hair test . you can see actual hair test collection on you tube search Hair Collection for Drug Testing
sorry you can look for lame ideas to try and make hair razor but tide and face wash wont help. tsal is the only thing you can buy at a store but only hair razor will beat it.
You can make them take a hair folicle test....but there are ways to beat them and in my case they did. But good luck to you!